“Fluxx” (** out of four) was an overdone and overly cerebral melodrama about an isolated actress (Shelley Henning) in her Hollywood Hills mansion who begins to emotionally unravel and reflects back on her past memories with a celebrated talk-show host (Tyrese Gibson killing time between “Fast And Furious” entries) and others in her life (Shiloh Fernandez, Tanner Beard, and others) as means to regain her grip on reality and sanity. Opens with a sensational and stylish opening credits and has some interesting themes but goes so far afield into excess and mundane unpleasantness and never gets back on track. Gibson is solid as usual but based on this effort his career seems to be in “flux.”